Elements of mechanics: treated by means of the differential and integral calculus (1887)
Peck, William G[uy], 1820-1892. [from old catalog] · New York, Chicago, A. S. Barnes & company · leaf 327
presents an annular ring of metal, which may bemade to revolve about its axis0. D D is a second ring ofmetal, concentric with the first,and forming with it an inter-mediate annular space. Thisspace communicates with thesucking-pipe E, and the de-livery pipe L. Four radialpaddles (7, are disposed so… … Fig. 177. HYDRAULIC AND PNEUMATIC MACHINES. 323 the rotary apparatus, and cut as represented in the figure.E E are two springs, attached to the ring Z>, and. acting bytheir elastic force, to press the paddles firmly against theguide. These springs are of such dimensions as not toimpede the flow…
Mechanics
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